The Equilibrium Constant for the Production of Carbon Dioxide from Carbon

The equilibrium constant for the production of carbon dioxide from carbon monoxide and oxygen is K_c = 2 × 10¹¹. This means that the reaction mixture at equilibrium is likely to consist of

A) mostly starting materials.
B) an equal mixture of products and reactants.
C) twice as much starting material as product.
D) twice as much product as starting material.
E) mostly products.